The council's city planning boss Julian Simmonds said the incentives were introduced as there was an urgent need for new aged care accommodation in Brisbane.

"Projections show that our city will require an annual increase of 3,600 to accommodate our ageing population," Cr Simmonds said.

However no everyone is happy about the boom in new retirement developments.

Of the 19 developments approved since September 1, nine received several submissions from concerned residents with many saying they were worried about the height, scale and traffic impacts of the proposed developments.

While the applications currently under assessment were not guaranteed approval, two of the developments had received hundreds of objections.

An application for 102 beds and 64 retirement units in buildings up to four stories tall at Beaudesert Road, Calamvale, has also received hundreds of submissions voicing resident's concern about the scale of the suburban development.

On Thursday, TriCare submitted their third aged care and retirement application since the incentive was introduced: 376 beds and units at Seven Oaks Street, Taringa with a building height of nine to 16 storeys.

"Brisbane City Council deserves credit for taking the initiative to tackle the seniors housing shortage, ensuring retirees and those seniors requiring care can age in the suburbs in which they currently live," TriCare property and planning manager Simon Dwyer said.

If the current development applications get approved by September 1, the annual increase of 3600 beds and units that Cr Simmonds said was necessary to accommodate the ageing population will fall just short with 3563 beds and units currently approved or planned.

Once approved, the developer will be able to apply for an infrastructure charges subsidy as part of the aged care and retirement incentive - so far only three of the approved developments have applied for it.

What the retirement living and aged care accommodation incentives include

Infrastructure charges reduction: Eligible developers will have their infrastructure charges reduced by 33 per cent.

Fast tracked assessment of application: The council has allocated a team of managers to process new applications for retirement and aged care housing. Council will also offer free pre-lodgement advice and a decision on the application within 90 business days.

Lowering the level of assessment: The level of assessment required for applications was lowered where the development is in certain zones including community facilities, specialised centre zone, low-density residential and low-medium density residential.

Increase of allowable building heights: The building height for code assessable applications in select zones can be built two storeys higher than the allowable building height for the area.

Integration of facilities: Small-scale commercial, retail and community uses allowed in the code-assessable facilities, such as childcare centres and food and drink outlets.

Re-use of land for developments: Retirement and aged care facilities can co-locate on privately owned sport and recreation-zoned land.

Easy change of use: Existing buildings can be changed from a retirement facility to an aged care facility, or vice versa, as part of a self-assessable development.